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sladkih [1.3K]
3 years ago
15

Which answer describes the measure of the amount of matter ?

Chemistry
2 answers:
svet-max [94.6K]3 years ago
7 0
A) molar mass.

Molar mass is the mass of one mole of a pure substance. So basically the measure of the amount of matter
Cerrena [4.2K]3 years ago
7 0

Answer: B. mole/s

Explanation:

Molar mass is defined as the mass of 1 mole of the compound. It is calculated by adding the masses of all the elements present in the compound.

A mole is defined as the amount of substance that contains Avogardro number of the substance. Avogadro's number is given by 6.022\times 10^{23}.

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles. Standard condition of temperature (STP)  is 273 K and atmospheric pressure is 1 atmosphere respectively.

Pressure of the gas is defined as the force exerted by the particles on the walls of the container. It is expressed in various terms like 'mmHg', 'atm', 'kiloPascals' etc..

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Sylvanite is a mineral that contains 28.0% gold by mass. How much sylvanite would you need to dig up to obtain 73.0 g of gold?
Scorpion4ik [409]

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Mass of sylvanite = 73.0 g Au × (100 g sylvanite/28.0 g Au) = <em>261 g</em> sylvanite.


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3 years ago
Combustion of 6.90g of this compound produced 13.8g of CO2 and 5.64g of H2O. What is the empirical formula of the unknown compou
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